Construction method of novel conversion system of special-shaped pier tower hydraulic creeping formwork

Abstract

The invention relates to a construction method of a novel special-shaped pier tower hydraulic creeping formwork conversion system. The construction method comprises the following steps: S1, preparing and numbering the hydraulic creeping formwork; S2, embedding the embedded part; performing S3, foundation section concrete pouring; S4, cleaning the creeping formwork platform; S5, enabling the frame body on the A1 face to be detached to fall to the ground; S6, lifting a lower frame body A1'; S7, installing an upper frame body B1 and lifting the B1'; S8, installing an upper frame body B2 and lifting a lower frame body B2'; S9, installing an upper frame body A2 and lifting the lower frame body A2'; S10, installing the upper frame body A1; S11, conducting climbing construction along a bridge direction hydraulic climbing formwork; S12, binding reinforcing steel bars and pouring concrete. The invention has the beneficial effects that the novel creeping formwork conversion system is adopted at the variable cross section of the tower column for cyclic replacement and disassembly, the purpose of system conversion is achieved, only one upper frame body needs to be lifted to the ground, the lower frame bodies continue to be lifted and fixed, and the other surfaces are cyclically replaced, disassembled and installed with the lower frame bodies lifted one by one as the basis.

Description

technical field [0001] The invention relates to a construction method for a new conversion system of hydraulic climbing formwork for special-shaped pier towers, and is mainly suitable for the conversion construction of hydraulic climbing formwork systems for "A-type", "H-type" and "Y-type" special-shaped pier towers. Background technique [0002] With the deepening of concepts such as "landscaping" and "integrating scenery", bridges crossing V-shaped valleys in mountainous areas are often designed as cable-stayed bridges, and the structural forms of cable-stayed bridge piers are also various, mainly including "A-shaped", "H type", "Y type" and so on. According to different pier tower structures, the crossing of pier towers or the consolidation positions of tower girders are different, and the construction techniques are different. The pier towers or tower girders can be constructed in "synchronous" and "asynchronous" constructions. When the intersection or tower beam is con...

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Problems solved by technology

[0003]Conventional system conversion is usually to manually cooperate with the tower crane to remove all the frames on the hydraulic climbing formwork, hoist it to the site under the bridge to adjust the angle, and then re-install it. This method There are the following problems: (1) It is easy to cause deformation of the flexible rods and templates of the upper frame

(2) The risk of high-altitude operation is high for the operators who install the lower frame, and the requirements for the stacking site are high

(3) The workload of reassembly and disassembly of the frame is too large, the construction time is long, the efficiency is low, and the construction period is seriously affected

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